Glass-drawing apparatus



Jufly 10, 1923. 43,603

c. DONALDSQN ET AL GLASS DRAWING APPARATUS" Filed June 24. 1921', 3 Sheets-Sheet 1 J-- Charles ,Donaldsom.

$barl$ Dd July 10, 1923.

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m ffu nf L d m m m H x v A? 1 t wuwwtom 6 h w'lea flonaldan fizm'ias D my I c. DONALDSON. ET AL GLAS S DRAWING APPARATUS 3 Sheets-Shee t 3 Filed June 24. 1921 um/ado:

('ZaarZes anda/0150 (1 1M165 flay.

Patented July 10, 1923.

UNETEE gTATES CHARLES nonALnson, or AUGUSTA, Kansas, Ann enemas DAY, or estimate,

OKLAiidMA.

Grass-DRAWING APPARATUS.

Application filed June 24, 1921.

T 0 all whom it may concern Be it known that we, CHARLES DONALDSON and CHARLES DAY, citizens of the United States, residing at Augusta and Okmulgee, respectively, in the counties of Butler and Okmulgee and States of Kansas and Oklahoma, have invented certain new and useful Improvements in Glass-Drawing Apparatus, of which the following is a specifica tion.

This invention relates to improvements in glass drawing apparatus and more especially to an improved pot supporting and changing means and an improved furnace arrangement whereby the drawing operation may be more conveniently and expeditiously performed and with less likelihood of defects in the finished product,

Another object of the invention is to pro vide, in connection with an improved form of furnace, a novelly constructed pot supporting truck movable with relation to the furnace and supporting a pair of pots which may be readily adjusted so that when one is in draining position, the other may be in drawing position, and vice versa.

Another object of the invention is to so construct the apparatus that when it becomes necessary to change the pots, this operation may be performed at a point where the heat from the furnace will not interfere therewith.

Another object of the invention is to so construct the trucks of the apparatus as to adapt the same to support the pots, while draining, in a vertically disposed position so that during this operation there will not be formed the usual tears or knobs of glass as in the ordinary method of draining;

A further objectof the invention is to provide such an arrangement of drawing furnace and pot supporting trucks or car'- riag'es that a uniform withdrawal of the glass from the furnace is insured and thus the likelihood of-removing more glass from one part of the furnace than from another with the consequent formation of seeds and blisters; is avoided.

In the accompanying drawings 2' Figure 1 is a front elevation of the apparatus embodying the invention;

Figure 2 is a top plan view thereof, the

furnace being shown in h'ori'zontal'section; Figure 3 is a vertical frontto' rear section-al VIGW. on the line 33' of Figure 2;

Serial No. 480,211.

Figure 4C is a vertical transverse sectiona view on the line 4.-4: of Figure 3;

Figure 5 is a vertical sectional View on the line 5-5 of Figured. v

The furnace of the apparatus is indicated in general by the numeral 1 and the same comprises a back wall 2, a front wall 3, and end walls 4, the furnace embracing within its interior a tank 5 containing the molten glass. The furnace is provided in its front wall 3, at suitably spaced intervals, with pot-receiving openings 6, and at opposite sides of. each opening with burners 7 which are arranged to direct their flames against diagonally disposed ba'flle walls 8 constructed within the furnace, the walls being converged toward a point opposite each opening 6 so that the flames will be reverb'erated by the baffle walls in the general direction of the openings 6, as indicated by the arrows in Figure 2 of the drawings.

The numeral 9 indicates in general the pot supporting trucks which are movable with relation tothe furnace and which-travel upon track rails 10 which are laid'parallcl to the front wall 3 of the furnace and in advance thereof. Each of the trucks 9 comprises spaced axles 11 provided at their ends with the supporting wheels 12 to travel. upon the track rails 10. The axles support spaced parallel sills 13 which constitute the frame or body of the truck. Mounted upon the sills 13' of each truck are two pairs of frames 14 disposed in upright position and each provided at its top with a rack indicated by the numeral 15. The outer frames of the pairs are located at the outer ends of the truck and the inner or relatively adjacentfrarnes of the pairs are located substantially at the middle of the truck, this arrangement being best shown in Figures 1 and 2 of the drawings. Each pair of frames is designed to support means for holding a drawing pot, and each supporting means comprises a preferably solid shaft 16 having fixed upon it adjacent its ends flanged gearwheels 17 which rest upon and mesh with the racks 15 of the associated pair of supporting frames 14. The shaft 16 is therefore supported in horizontal position ex-' tending between its respective support ng frames and it is adapted tobe rotated, and in this rotation, because of the coaction of the gear wheels 17 with the racks 15, the shaft will be advanced toward or retracted its parts or sections and respectively receiva from the frontwall of the furnace depending of course upon the direction of rotation of the. shaft. The means provided for rotatin'g the shaft to effect this movement with relation to the furnace. front will presently be described. 1 Y

Loosely supported upon each shaft 161s a sleeve shaft 18 to the intermediate" portion of which is clamped a two-part-casting 19 having sockets 20 and'21 formed between ing the inner ends of arms 22 and 23. These .armsmay be secured in place by any suitable means as forexample set screws 24, and the armv22'is tubularior at least providedat its outer, end with a socket 25 re- ;ceiving a stem 26 formed'upon the under side of'a circular plate 27, the stem being formed with a 'circumscribingy roove 2S and a set screw 291being threaded through the wall of the socket and binding at its end in this groove. A pot supporting plate 30. issecured in any desired manner upon the face of the plate 27 and this plateBO is of general circular form and is provided at diametrically opposite points wlth peripheral flanges 31 having inturned lips 32, the flanges being-of arcuate form and extending each a'suitable distance about the periphery of the respective'plate 80. The drawing pot to be supported upon the plate is indi cated in general by the numeral 33 and the same comprises a bottom 34 and a circumferential wall 85, the said bottom 34 at diametrically opposite sides being formed with I outwardly projecting arcuate flanges 36 lymay be angularly adjusted about the shaft 16vas an axis so as to position them either in horizontally disposed or drawing position orin vertically disposed or draining position, and, to counterbalance the pots, each arm 23'is provided at its outer end with a counterbalancing weight 37. I In order that the shaft 18' may be. rotatablyadjusted so as to angularly adjust the pot supporting means, a hand Wheel 38 is fixed upon the shaft near one end thereof asshown in Figure 4 of the drawings A similarhand wheelr89 is fixed upon the co ?--v responding endof the respective shaft 16 so that this-shaftalso may be manually rotated 1n the use of theapparatus. 1

"In-order that the shaft 16 maybe locked ,against' rotation when adjusted in. the F quirednrannena disk 40 is fixed upon the i shaft,' and atwo-part strap 41-is bolted or otherwise secured about the periphery of this disk, the periphery ofthe disk being formed with notches 42 which may be brought opposite an opening 43 formed between themeeting ends of the sections 41 of the strap when the strap is held station-. ary and the disk is rotated through rotation of the shaft 16; The said ends ofthe strap are formed to provide a socket 44 in which "15 fitted or secured one end of a tubular barrel 45 wh1chpro ects radially from the strap and within which is slidably mounted a detent rod 46 having an end 47 adapted forprojection into one or another vofthe notches 42 as illustrated-in Figure 5 of the. drawings. A handle 48 is. applied to the outer end of the barrel 45 and for this purpose is preferably provided with aan' interiorlythreaded collar or head 49 having an openingv 50 through which the rod 46 extends and is guided. A spring '61 is fitted upon the. rod and bears at one end against the head 49 and atfits other end against a collar 52 fixed upon-the rodand working in the bore of the barrel 45. "A small hand lever 53 is mounted'pi otally upon the handle 48 and connected,- as at 54,] with the outer end of the rod 146. Normally the spring 51 will 'holdthe rod shifted for :the projection of its end 4Tinto one or another of the notches 42but by manipulating the hand lever 53 the rod nlay be retractcdfrom such engagement so as to I permit of rotation-of the shaft 16 by the aid ofthe hand wheel 39'. In order that the barrel 45 and strap- 41 from which it extends may be held. stationary," the barrel is slidably guided through one arm" of a bracket 55 fixed upon the ad acent-frame A. disk 56 corresponding- 14 ofthe truck. to the disk 40 is fixed or formed upon the shaft 18 and is surrounded bya strap 57 corresponding to :the strap 41 and. hav" ing'associated therewith a barrel 58, detent rod 59; and operating hand lever 60all cor-- responding in construction and function to the similar, parts illustrated in detail in Figure 5 and-above specifically described. The barrel 58 likewise, works slidably through the other "arm of the respective bracket 55, and it will be evident that in this mannerflmeans is provided whereby both of the shafts. 16'and 18 may be locked against rotation and -in adjusted position although either shaft may be'released for rotation and then rotated: through" the medium of the respective hand wheel 38 or 89 as the case maybe. V A

The d'rawingfapparatus proper compris ing the usual-bait 61 is arranged with relation to the furnace in the manner best shown in Figurel of the drawings and by reference to this figure and'Figure 2 it will be observed that in the illustrated positions of the trucks, one pot of each truck is supported in upright position and in operative relation to the respective bait 61, the other pot upon each truclrbein'g in vertically disposed or draining position within the respective or adjacent opening withinthe furnace wall 3. At the completion of the drawing and draining operations, the positions of the pots upon each truck will be reversed and the trucks will be shifted so'that the pot which was formerly in drawing position will now occupy the draining position and vice versa. In order that either pot upon any truck may be moved for example from drawing to draining position, and assuming that the parts are in the positions illustrated in full lines in: Figures 3 :and 4 of the drawings, the operating hand lever will be manipulated to detract the detent rod 59 and thus release the respective shaft 18 whereby this shaft is rotated through the medium of the hand wheel 38 so that the pot and its supporting arm 22 as also the arm :33 and counterweight 37 will be turned about the shaft 16 as an axis from the full line position in Figure 3 to the dotted line position in said figure. Assuming that the pot is now opposite its respective opening 6 in the furnace wall 3, it is required that the pot be advanced to'a position occupying this open ng. As the hand lever 60 has been released, the shaft 18 has been locked in its position of adjustment so that the pot will maintain the dotted line position shown in Figure 3. and now the operating handle lever 53 is manipulated to retract the detent rod 46 and release the shaft 16 which shaft may be rotated through the medium of the hand wheel 39toward the right in Figure 3 to cause the gear wheels 17 to ride along the tracks 15 and thus bodily move the pot supporting structure in the direction of the furnace wall3 and posi tion the pot within the opening 6. A reversal of the foregoing operation will restore the pot to the drawingposition shown in full lines in Figure 3.

Openings 63 are provided in the bottom or floor of the furnace or kiln so that glass drained from the drawing pot may be discharged from the furnace into the cellar constructed beneath it.

Having thus described the invention, what is claimed as new is:

1. In apparatus of the class described, in combination, a furnace provided in its wall with a pot receiving opening, a truck movable with relation to said wall, and means upon the truck for supporting a pot and adjustable to position the pot in drawing position or in position within the said opening to drain.

2. In apparatus of the class described, in combination, a furnace provided in its wall with a potvreceiving opening and interiorly with a baflie wall positioned, diagonally to the first-mentioned wall and generally facing the opening, a burner for'delivering a blast in the direction of the baffle wall, and means for supporting a pot and. adjustable to position the pot within said opening to drain.

I 3. In apparatus of the class described, in combination, a furnace provided in its wall with a pot opening, a truck supported for travel transversely with relation to the furnace wall, pot supporting means thereon, and means operable to bodily adjust the pot supporting means laterally with relation to the truck and also to position the *pot in drawing position or inzdraining position.

4. In apparatus of the class described,n truck supported for travel, a shaft supported thereon, pot supporting means upon the shaft, means whereby the shaft may be rotatably adjusted to position the pot inupright drawing positionor in another position to drain, and means whereby the shaft may be bodily shifted to correspondingly shift the pot supporting means.

5. In apparatus of the class described, a truck supported for travel, a shaft supported thereon, means for adjusting the shaft bodily laterally with relation to the truck, and pot supporting means angularly adjustable about the shaft.

6. In apparatus of the class described, a truck supported for travel, a shaft supported thereon, means whereby the shaft may be bodily shifted laterally with relation to the truck, pot supporting means supported upon the shaft for angular adjustment with relation thereto, and means whereby the pot supporting means may be so adjusted.

In apparatus of the class described, a

truck supported for travel, spaced racks upon the truck, a shaft geared with the racks whereby its rotation will result in its bodily shifting adjustment, means whereby the shaft may be rotated, and pot supporting means carried by the shaft.

8. In apparatus of the class described, a truck supported for travel, spaced racks upon the truck, a shaft geared with the racks whereby its rotation will result in its bodily shifting adjustment, means whereby the shaft may be rotated, and pot supporting means carried by the shaft and angularly adjustable about the shaft as an axis.

9. In apparatus of the class described, a truck supported for travel, spaced racks upon the truck, a shaft geared with the racks whereby its rotation will result in its bodily shifting adjustment, means whereby the shaft may be rotated, pot supporting means carried by the shaft and angularly adjustable about the shaft as an axis, and means whereby the pot supporting means the shifting adjustment of the shaft.

1 10. In apparatusof' the class described, a

truck supported for travel, spaced racks upon the truck, a shaft,gear wheels carried by the shaft and meshing with the rack, :neans whereby the shaft may be rotated, means for holding theshaft against rotation whereby 'to, hold the same in positions of shiftin adjustment effected through its rotation and'the meshing of the gear wheels with the racksa sleeve'shaft upon the firstmentioned shaft rotatable independently thereof, means whereby the sleeve shaft'may be rotated,=means for holding the sleeve shaftagainst rotation and thus maintain it, in positions of adjustment, a supporting member extending from the sleeve shaft, and pot supportingmeans carried by the said member. 1 r L '11. In apparatus of the class described, a

. truck supported for travel, space-d racks upon the. truck,:a shaft, gear wheels carried by the shaftand meshing with the rack,

means whereby the shaft maybe rotated, 1

mentioned shaft rotatable independently thereof, meanswhereby the sleeve shaft, may

be rotated, means for holdingthe sleeve 5 shaft against rotation and thus maintain it inpositions of adjustment, a "supporting member extending from the sleeve shaft, pot

supporting means carried by the said memher, the saidsup-porting member being lo' cated atone sideof the sleeve shaft, and counterbalancing means located at the other side of the said shaft.

In testimony whereof we afiix our signatures.

oHARLEs DoNALnsoN. a 8. on RL s-pAY. [14.8.] 

